// JpgImage.h: interface for the CJpgImage class.
//
//////////////////////////////////////////////////////////////////////

//#include "..\\display\\stdafx.h"
#include <afxwin.h>
#if !defined(AFX_JPGIMAGE_H__5F46CEC3_1743_11D3_A718_0000E843B489__INCLUDED_)
#define AFX_JPGIMAGE_H__5F46CEC3_1743_11D3_A718_0000E843B489__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000



class BMPFILE//:public BITMAPFILEHEADER,public BITMAPINFO,public __DATA
{
protected:
	WORD _unuse;	//用來對齊字節(jié)
public:
	BITMAPFILEHEADER	head;
	BITMAPINFO			info;
	unsigned int		pBitmap[1];
	void Init();
	

};
class CJpg;
class CJpgImage  //AFX_EXT_CLASS 
{
public:
	int GetCBitmap(CBitmap & bitmap);//將圖象初始化入bitmap,
	//bitmap必須沒有被初始化過,最后bitmap會(huì)和屏幕相容
	SIZE GetMapSize();//得到圖象大小
	
	int LoadJpg(UINT ResouceID/*資源ID如ID_JPG*/,CString ResouceName/*資源類名如"JPG"*/);//調(diào)入資源中的JPG數(shù)據(jù)
	int LoadJpg(CString filename);//調(diào)入文件名為filename的JPG文件
	int SaveFile(CString filename);//將圖象數(shù)據(jù)存儲(chǔ)為文件名filename的BMP文件
	const BMPFILE  * GetBmpFileData();//得到圖象的BMPFILE結(jié)構(gòu),其中包含head,info,和圖象數(shù)據(jù)(32位)
	int LoadJpg(void * p,int size);//調(diào)入指針p指向的JPG數(shù)據(jù),數(shù)據(jù)大小是size
	CJpgImage();
	virtual ~CJpgImage();
	int StretchDIBits(	HDC hdc,                // 目標(biāo)HDC
						int XDest,              // X原點(diǎn)
						int YDest,              // Y原點(diǎn)
						int nDestWidth,         // 寬度
						int nDestHeight,        // 高度
						int XSrc,               // X原點(diǎn)
						int YSrc,               // Y原點(diǎn)
						int nSrcWidth,          // 
						int nSrcHeight,         // 
						UINT iUsage,            // usage flags
						DWORD dwRop  );         // raster operation code
	//寫數(shù)據(jù)制DC,iUsage和dwRop可參見API 的StretchDIBits
protected:
	CJpg * pJpg;
};

#endif // !defined(AFX_JPGIMAGE_H__5F46CEC3_1743_11D3_A718_0000E843B489__INCLUDED_)